I am on the Catalyst mission, where you have to throw stuff to your homies..

I found it fairly hard too, but I have a hnt for you. When on a turn, always throw it slightly to the left of Ryder, and he'll catch it.

Try aiming upwards so that it lands nearer the back of the car.

Try staying beside the train or drive in frount of it.

Hope I help

Aim right for Ryder directly and throw as hard as it can go do that alot of times really fast it's really easy.

Huh?
Well okay, take into account the amount of time it takes the box to travel, so aim above or to either side, and just practice, this mission is so easy if you get used to it. Then, get to the pay n spray, not that hard eh?
I think yuor going to need help on a few missions if your struggling with this, just give me a shout out!
Jay Rock

It took me a couple of goes but I finally got it now I find it easy my hint is just throw it to the left I think and there is a greater chance of ryder getting it hope I helped.

That is one of the easiest mission all you have to do is aim at rider and he'll
Catch the boxes automatically. When he's far thow the boxes with more power.

Try to aim better and you will make it.